Mega fantasy: Internet mogul Kim Dotcom holds a preliminary press conference at his mansion in Coatsville, north west of Auckland in the lead up to his new Mega website launch.

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The eyes of the world were on rural Albany this week when multimillionaire playboy Kim Dotcom announced plans to take on internet giant Google.

Dotcom launched his new venture in style,with guns, girls and glitz at his Albany mansion on Sunday.

The guns were fake - part of a spoof on the police raid at the mansion last January.

Dotcom says his venture, cloud-based file storage site Mega.co.nz, aims to take 10 per cent of Google's advertising revenue.

Google rakes in advertising revenue of US$36.5 billion.

Dotcom's plan involves the launch of the MegaBox music sharing service in a few months which will be accessible for free to users who also download the MegaKey application.

Once installed on a user's computer MegaKey will allow Mega to serve up its own advertising on the web pages of third party websites, effectively redirecting the revenue from players such as Google.

Dotcom says MegaKey will exclusively target large publishers such as Google and Yahoo.

"Right now Google is linking to all this content and even though Google is a great company and I love them and their attitude, Google is the largest index of pirated content in the world and they don't pay any licence holder and they are in business and they are doing really well.

"So if my software can force companies like Google to pay their little share to content creators, it wouldn't really hurt them," he says.

Dotcom also repeated his willingness to help make a second undersea fibre cable from New Zealand to the United States a reality.

But he says it would be better placed into Panama.

He says breaking the Southern Cross cable's monopoly on internet traffic would mean cheaper broadband for all New Zealanders and would create more business opportunities for New Zealand companies.